void DeInitDirectShow()
{
if (mediaControl != null)
{
mediaControl.StopWhenReady();
}
if (mediaEventEx != null)
{
mediaEventEx.SetNotifyWindow(IntPtr.Zero, WM_GRAPHNOTIFY, IntPtr.Zero);
}
if (videoWindow != null)
{
videoWindow.put_Visible(OABool.False);
videoWindow.put_Owner(IntPtr.Zero);
}
Marshal.ReleaseComObject(mediaControl);
mediaControl = null;
Marshal.ReleaseComObject(mediaEventEx);
mediaControl = null;
Marshal.ReleaseComObject(videoWindow);
videoWindow = null;
Marshal.ReleaseComObject(graphBuilder);
graphBuilder = null;
Marshal.ReleaseComObject(captureGraphBuilder);
captureGraphBuilder = null;
Marshal.ReleaseComObject(outputRenderer);
outputRenderer = null;
Marshal.ReleaseComObject(aspectRatioControl);
aspectRatioControl = null;
Marshal.ReleaseComObject(aspectRatioControl9);
aspectRatioControl9 = null;
}
void InitDirectShow(IntPtr handle)
{
graphBuilder = (IGraphBuilder) new FilterGraph();
mediaControl = (IMediaControl)(IVideoWindow)graphBuilder;
videoWindow = (IVideoWindow)(IMediaControl)graphBuilder;
mediaEventEx = (IMediaEventEx)graphBuilder;
captureGraphBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();
outputRenderer = (IBaseFilter) new VideoMixingRenderer9();
if (outputRenderer != null)
{
graphBuilder.AddFilter(outputRenderer, "Output");
aspectRatioControl = outputRenderer as IVMRAspectRatioControl;
aspectRatioControl9 = outputRenderer as IVMRAspectRatioControl9;
}
var hr = mediaEventEx.SetNotifyWindow(handle, WM_GRAPHNOTIFY, IntPtr.Zero);
DsError.ThrowExceptionForHR(hr);
hr = captureGraphBuilder.SetFiltergraph(graphBuilder);
DsError.ThrowExceptionForHR(hr);
graphBuilderRotEntry = new DsROTEntry(graphBuilder);
}
// VMR windowed behaves like a real windowed renderer, i.e. it must be configured after the video is rendered (compare with VMR9 windowed)
protected override void Initialize(IGraphBuilder pGraphBuilder, IntPtr hMediaWindow)
{
base.Initialize(pGraphBuilder, hMediaWindow);
IVMRAspectRatioControl pVMRAspectRatioControl = (IVMRAspectRatioControl)BaseFilter; // will be released when we release IBaseFilter
pVMRAspectRatioControl.SetAspectRatioMode(VMR_ASPECT_RATIO_MODE.VMR_ARMODE_NONE);
}
public void DoTests()
{
arControl = (IVMRAspectRatioControl) new VideoMixingRenderer();
try
{
TestAspectRatioMode();
}
finally
{
Marshal.ReleaseComObject(arControl);
}
}
